Jessica Simpson usweekly060408.jpg

Carrie Underwood isn't the only one coming between Jessica and Tony - looks like Joe Simpson is doing damage, too!

Us Weekly's cover story has Tony Romo telling girlfriend Jessica Simpson to make her dad back off - and what if he doesn't?

Papa Joe tells Us "it’s unfair to criticize me for what every manager does for his or her clients. And in this business, where people can quickly turn on you, who better than a parent to be working for his children?"

Hmm, think he's being sincere? I dunno - I mean, this is Papa Joe we're talkin' about!